Lamp for forming a low-shadow lighting field
US6582092B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 24, 1999 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Aug 24, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/804
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp, in particular a lamp for medical applications (operating lamps), having at least one light source, and at least two reflectors, is provided where in order to form a low-shadow illuminated area, light emerging from the lamp impinges upon the illuminated area by at least two different angles of incidence, such that the angles of incidence of the light can be adjusted by changing the distance between the at least two reflectors or between one reflector and the source of the light. The at least two reflectors may be arranged so that they can shift in the radial direction on carrier rails that extend radially from the center of the lamp. In this arrangement, the reflectors always lie on a common circular circumference, and the reflectors can be shifted through manually activated gears or through electric drive motors.Two ring-shaped reflectors may also be provided coaxially to the lamp-longitudinal axes, where an outer ring-reflector surrounds the light source affixed along the longitudinal axis, while on the side that faces away from the illuminated area, an inner ring-reflector is provided. The inner ring reflector is arranged so that it can be shifted along the longitudinal a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.